Update 0513.找树左下角的值.md

problems/0513.找树左下角的值.md

@@ -274,8 +274,28 @@ class Solution {
 
 
 Python：
-
-
+```python
+//递归法
+# Definition for a binary tree node.
+# class TreeNode:
+#     def __init__(self, val=0, left=None, right=None):
+#         self.val = val
+#         self.left = left
+#         self.right = right
+class Solution:
+    def findBottomLeftValue(self, root: TreeNode) -> int:
+        depth=0
+        self.res=[]
+        def level(root,depth):
+            if not root:return
+            if depth==len(self.res):
+                self.res.append([])
+                self.res[depth].append(root.val)
+            level(root.left,depth+1)
+            level(root.right,depth+1)
+        level(root,depth)
+        return self.res[-1][0]
+```
 Go：